Related Experiment Video

Updated: Jun 4, 2026

Macrophage Cholesterol Depletion and Its Effect on the Phagocytosis of Cryptococcus neoformans
11:07

Macrophage Cholesterol Depletion and Its Effect on the Phagocytosis of Cryptococcus neoformans

Published on: December 19, 2014

Pyrenochaeta romeroi: a causative agent of phaeohyphomycotic cyst

Ziauddin Khan1, Suhail Ahmad1, Kusum Kapila2

  • 1Department of Microbiology, Faculty of Medicine, Kuwait University, Kuwait.

Journal of Medical Microbiology
|February 26, 2011
PubMed

Insights

A rare subcutaneous phaeohyphomycotic cyst caused by Pyrenochaeta romeroi was identified in an Indian female. The Pyrenochaeta romeroi isolate showed antifungal resistance, despite the patient

Area of Science:

  • Medical Mycology
  • Infectious Diseases
  • Dermatology

Background:

  • Phaeohyphomycosis is a fungal infection caused by dematiaceous fungi.
  • Subcutaneous phaeohyphomycotic cysts are rare clinical manifestations.

Observation:

  • A 47-year-old Indian female presented with a subcutaneous cyst.
  • Pyrenochaeta romeroi was repeatedly isolated from cyst aspirates.
  • Identification confirmed by morphology and rDNA sequencing.

Findings:

  • The Pyrenochaeta romeroi isolate exhibited resistance to common antifungal agents.
  • The patient recovered spontaneously without antifungal treatment.
  • This is the second reported case of subcutaneous phaeohyphomycosis caused by Pyrenochaeta romeroi.

Implications:

  • Highlights the potential for Pyrenochaeta romeroi to cause subcutaneous infections.
  • Suggests that antifungal resistance may be a feature of Pyrenochaeta romeroi.
  • Emphasizes the importance of accurate fungal identification in clinical practice.

More Related Videos

Rapid Freezing using Sandwich Freezing Device for Good Ultrastructural Preservation of Biological Specimens in Electron Microscopy09:03

Rapid Freezing using Sandwich Freezing Device for Good Ultrastructural Preservation of Biological Specimens in Electron Microscopy

Published on: July 19, 2021

Related Concept Videos

Fungal Group Zygomycota01:29

Fungal Group Zygomycota

Zygomycota, previously classified as a distinct fungal group, are primarily terrestrial, saprophytic molds that play a crucial role as decomposers. Recent phylogenetic studies have revealed that these fungi are now divided into two major clades — Mucoromycota, which includes many symbiotic species, and Zoopagomycota, which primarily consists of parasitic and pathogenic fungi. These groups exhibit distinct ecological roles and reproductive strategies while sharing key structural and...
Fungal Phylum Microsporidia01:28

Fungal Phylum Microsporidia

Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
Bacterial Phylum Spirochaetes01:30

Bacterial Phylum Spirochaetes

Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased by a...
Bacterial Phylum Planctomycetes01:26

Bacterial Phylum Planctomycetes

Planctomycetes are a group of morphologically distinct bacteria predominantly classified into two orders: Planctomycetales and Brocadiales. These gram-negative bacteria exhibit unique features, including division by budding and the presence of stalks or appendages. Their cells are often found in rosette arrangements, and they are notable for possessing an S-layer in their cell envelope, which is relatively uncommon among bacteria. Additionally, Planctomycetes frequently exhibit intracellular...
Cryptococcal Meningitis01:27

Cryptococcal Meningitis

Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...
Diversity of Protists II01:27

Diversity of Protists II

Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...